Of course its absolutely right especially for kids when they are barefoot there is chance of parasites attack or sometimes injury by a things which is still left on the floor during cleaning. The parasites are often present in the homes and also outside so its not safe to be barefoot as it may caused troubleshooting and painful for the feet if its infected once.

Walking barefooted exposes us to the dangers of of getting injured by sharp objects like razors, needles, broken glasses and many other dangerous materials. This is not only done by children ,this guideline of keeping sharp objects away is also applicable to adults as many any cuts and wounds we get today are as a results of having contacts with sharp objects.

Goodluck.